p 47#

l to the data files

Jigsaw Mitre Joint

Corner joints with mitred framing timbers are con-

sidered to be particularly harmonious from a design

viewpoint. From a technical viewpoint, however,

the traditional mitred frame joints count among

the “weak“ wood joints.

Like the dovetail corner scarf, the Jigsaw Mitre Joint

distinguishes itself through its good technical qua-

lities. The geometry of the two opposing shaped te-

nons, whose lines run parallel either to the frame

or to the mitre, guarantees tensile strength and at

the same time the harmony of the joint.

Example of applicationl Frame-Shelf

name of file: P_001

p 47#

l to the data files

Triple Dovetail

The Triple Dovetail is a variant of the Double Dovetail

Joint and is particularly suited for the lengthening

of wide framing timbers. On the top side of the clo-

sed joint only one big dovetail tenon is visible, on

the underside there are two smaller ones. They

prevent the framing timbers from twisting and

strengthen the joint as they shorten the length of

the flattened surface. Dovetail scarfs fit in with the

group of the scarf joints as well as with the group

of the table joints, which can occasionally lead to

misunderstandings.

name of file: T_003

p 37#

l to the data files

Fingertip Tenons with Central Positioning Tenon

The Fingertip Tenons can not only be executed with

lateral positioning tenons, but also with one cen-

tral positioning tenon. The latter version is mainly

used when there is no great need to secure the

mortised parts, e.g. cross bars and foot-rails,

against torsion. If the mortised parts are broad, it

is recommended to place more positioning tenons

in the row of tenons.

The Fingertip Tenons can be executed in solid

wood as well as board materials. When solid wood

is used, one needs to pay attention to the main di-

rection of shrinkage in the mortised parts.

Example of applicationl C...Stool

name of file: F_009

p 47#

l to the data files

Fingertip Tenons

The Fingertip Tenons are slenderer than the Finger

Tenons. Ideally the width of the tenons equals the

diameter of the router bit. In order to avoid that the

tenons slip through, a special positioning tenon is

placed at either end of each row of tenons. In the

case of broader rows of tenons, additional posi-

tioning tenons can be inserted.

Due to the greater number of tenons for an equal

width, the Fingertip Tenons, as opposed to the Fin-

ger Tenons, have a higher friction tight which leads

to a higher durability of the joint.

Example of applicationl C...Stool

name of file: F_001